import random


def generate_unique_str():
    all_chars = "alksdjkalncklaishdasinclz1239827398"
    # random.sample随机选取不重复的5个字符
    uniques_str = "jeremy"+"".join(random.sample(all_chars,5))
    return uniques_str

if __name__ == '__main__':
    print(generate_unique_str())